表 3. Univariate Cox regression analysis of recurrence-free survival in the NMIBC cohort and BCG subgroup.

NMIBC队列与BCG组无复发生存的单因素Cox回归

Clinicopathological variable	Total patients (n=93)			BCG group (n=72)
	P	Hazard ratio (95% CI)		P	Hazard ratio (95% CI)
CI: Confidence interval. NMIBC, BCG, EPI, recurrent≤1 rec/year, recurrent>1 rec/year, EAU: Note the same as table 1 .
Gender (female)
Male	0.538	1.466 (0.434−4.958)		0.718	0.786 (0.213−2.905)
Age (≤60 yr.)
61−70 yr.	0.255	0.592 (0.240−1.459)		0.546	0.682 (0.197−2.360)
>70 yr.	0.310	0.512 (0.140−1.865)		0.647	0.682 (0.132−3.514)
Smoking history (no)
Yes	0.071	2.226 (0.933−5.314)		0.473	1.514 (0.488−4.695)
Prior recurrence rate (primary)
Recurrent≤1 rec/year	0.062	3.282 (0.944−11.412)		0.033	10.827 (1.209−96.991)
Recurrent>1 rec/year	0.001	15.121 (5.297−43.167)		0.001	53.346 (6.522−436.343)
T stage (Ta)
T1	0.892	1.072 (0.394−2.915)		0.246	1.972 (0.626−6.215)
Grade (low grade)
High grade	0.920	0.958 (0.415−2.212)		0.359	1.754 (0.528−5.825)
Tumor size (<3 cm)
≥3 cm	0.009	3.758 (1.385−10.195)		0.034	5.170 (1.131−23.632)
Amount of tumors (≤3)
>3	0.344	1.509 (0.644−3.540)		0.397	1.644 (0.520−5.197)
EAU risk stage (intermediate risk)
High risk	0.504	1.345 (0.564−3.210)		0.108	3.482 (0.762−15.912)
Treatment group (BCG 19 times)
BCG 15 times	0.956	0.969 (0.312−3.005)		0.975	1.018 (0.328−3.158)
Treatment group (BCG)
EPI	0.019	3.378 (1.225−9.313)		−	−